Cool, so its got 3 games on it not just one, neato...cant wait to play them, and Ex I took it apart and the only thing it does is swap the data lines, so all in all if we took the duo apart we could rewire the inside to play the Jap Carts without a converter, and the only wires that are crossed are like the middle 7 or so......I guess the reason this converter works the best is because its best aligned and you cant move it around after its plugged in, its VERY snug fit, unlike the kisado and others which move around freely and you get lucky when they do work, if they dont get bumped and screw up.....So yeah this converter is cool.